package net.xdclass.util;

import java.util.ArrayList;
import java.util.List;
import java.util.function.Consumer;
import java.util.function.Supplier;

/**
 * @Classname Builder
 * @Description TODO
 * @Date 2022/8/19 9:21
 * @Created by sunhao
 * 构建对象的一种方式
 */
public class Builder<T> {
  private final Supplier<T> instantiator;
  private List<Consumer<T>> modifiers = new ArrayList<>();
  public Builder(Supplier<T> instantiator) {
    this.instantiator = instantiator;
  }
  public static <T> Builder<T> of(Supplier<T> instantiator) {
    return new Builder<>(instantiator);
  }
  public <P1> Builder<T> with(Consumer1<T, P1> consumer, P1 p1) {
    Consumer<T> c = instance -> consumer.accept(instance, p1);
    modifiers.add(c);
    return this;
  }
  public <P1, P2> Builder<T> with(Consumer2<T, P1, P2> consumer, P1 p1, P2 p2) {
    Consumer<T> c = instance -> consumer.accept(instance, p1, p2);
    modifiers.add(c);
    return this;
  }
  public <P1, P2, P3> Builder<T> with(Consumer3<T, P1, P2, P3> consumer, P1 p1, P2 p2, P3 p3) {
    Consumer<T> c = instance -> consumer.accept(instance, p1, p2, p3);
    modifiers.add(c);
    return this;
  }
  public T build() {
    T value = instantiator.get();
    modifiers.forEach(modifier -> modifier.accept(value));
    modifiers.clear();
    return value;
  }
  /**
   * 1 参数 Consumer
   */
  @FunctionalInterface
  public interface Consumer1<T, P1> {
    void accept(T t, P1 p1);
  }
  /**
   * 2 参数 Consumer
   */
  @FunctionalInterface
  public interface Consumer2<T, P1, P2> {
    void accept(T t, P1 p1, P2 p2);
  }
  /**
   * 3 参数 Consumer
   */
  @FunctionalInterface
  public interface Consumer3<T, P1, P2, P3> {
    void accept(T t, P1 p1, P2 p2, P3 p3);
  }
}
